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Re: [Xen-devel] [PATCH v2 25/41] arm : acpi add status override table



+shannon

On 18 May 2015 at 01:33, Parth Dixit <parth.dixit@xxxxxxxxxx> wrote:
> Status override table is used to hide devices from DOM0
> that are used by xen
>
> Signed-off-by: Parth Dixit <parth.dixit@xxxxxxxxxx>
> ---
>  xen/include/acpi/actbl2.h | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
>
> diff --git a/xen/include/acpi/actbl2.h b/xen/include/acpi/actbl2.h
> index 25be429..9c8d807 100644
> --- a/xen/include/acpi/actbl2.h
> +++ b/xen/include/acpi/actbl2.h
> @@ -79,6 +79,7 @@
>  #define ACPI_SIG_WDAT           "WDAT" /* Watchdog Action Table */
>  #define ACPI_SIG_WDDT           "WDDT" /* Watchdog Timer Description Table */
>  #define ACPI_SIG_WDRT           "WDRT" /* Watchdog Resource Table */
> +#define ACPI_SIG_STAO           "STAO" /* Status Override Table */
>
>  #ifdef ACPI_UNDEFINED_TABLES
>  /*
> @@ -894,6 +895,19 @@ struct acpi_table_uefi {
>  };
>
>  
> /*******************************************************************************
> +  *
> +  * STAO - Status Override Table
> +  *        Version 0.3
> +  *
> + 
> ******************************************************************************/
> +
> +struct acpi_table_stao {
> +    struct acpi_table_header header;   /* Common ACPI table header */
> +    u8 uart;    /* Indicates presence of SPCR table */
> +    u8 devpath[1];    /* Full namepath of uart device in ACPI namespace */
> +};
> +
> +/*******************************************************************************
>   *
>   * WAET - Windows ACPI Emulated devices Table
>   *        Version 1
> --
> 1.9.1
>

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